Excerpt from Astronomical and Meteorological Observations Made at the United States Naval Observatory During the Year 1865 The thermometers used in connection with the circle observations are specified in the account of those observations. A table of corrections for recorded readings of the air (external) thermometer is there given. The other room of the east wing is wholly devoted to nautical and other instruments required in naval operations. Cases to contain the chronometers and shelves, dzc. For the other instru ments ...
Read More
Excerpt from Astronomical and Meteorological Observations Made at the United States Naval Observatory During the Year 1865 The thermometers used in connection with the circle observations are specified in the account of those observations. A table of corrections for recorded readings of the air (external) thermometer is there given. The other room of the east wing is wholly devoted to nautical and other instruments required in naval operations. Cases to contain the chronometers and shelves, dzc. For the other instru ments, are so disposed as to accommodate the largest number and to facilitate their examination or distribution. The chronometers are daily compared with a clock in the southwest corner of the room, and at the end of each month their rates are transferred from the comparison papers to record books. The latter instrument was made for the old Depot of Charts and Instruments, by Messrs. Parkinson Frodsham, and is identical in construction with the clock of the east wing. It is firmly held against a granite pier by strong braces. To facilitate and render the instants of comparison more certain when noise causes the clock-beat to be inaudible, a tilt hammer and electro-magnet are connected by wires with a battery, and the clock pendulum through a mercury globule. When the circuit is closed, a sharp ringing sound is emitted by the hammer at each vibration of the pendulum. The rate of this clock is more uniform than that of any other in the establishment, Kessel's excepted. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Read Less
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
